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<div class="title">opennurbs_object.h</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* $NoKeywords: $ */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Copyright (c) 1993-2012 Robert McNeel &amp; Associates. All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// McNeel &amp; Associates.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// THIS SOFTWARE IS PROVIDED &quot;AS IS&quot; WITHOUT EXPRESS OR IMPLIED WARRANTY.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// MERCHANTABILITY ARE HEREBY DISCLAIMED.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">//              </span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// For complete openNURBS copyright information see &lt;http://www.opennurbs.org&gt;.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//   virtual base class for all openNURBS objects</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#if !defined(OPENNURBS_OBJECT_INC_)</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#define OPENNURBS_OBJECT_INC_</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; </div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">class </span><a class="code" href="class_o_n___class_id.html">ON_ClassId</a>; <span class="comment">// used for runtime class identification</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">// Runtime class id</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">// Description:</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment">//   Every class derived from ON_Object has a class id that records</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">//   its class name, baseclass name, and class uuid.  The </span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">//   ON_OBJECT_DECLARE and ON_OBJECT_IMPLEMENT macros generate</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">//   the code that creates and initializes class ids.</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment">//   The ON_Object::IsKindOf() and ON_Object::Cast() functions</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">//   use these class ids.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="class_o_n___class_id.html">   42</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___class_id.html">ON_ClassId</a></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;{</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160; </div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;  <span class="comment">// Description:</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;  <span class="comment">//   This constructor is called to initialize each class id.</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="comment">//   The call is generated by the ON_OBJECT_IMPLEMENT macro.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;  <span class="comment">// Parameters:</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  <span class="comment">//   sClassName - [in] name of the class (like ON_Geometry)</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  <span class="comment">//   sBaseClassName - [in] name of baseclass (like ON_Object)</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;  <span class="comment">//   create - [in] function to create a new object(like CreateNewON_Geometry())</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  <span class="comment">//   copy - [in] function to copy</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  <span class="comment">//   sUUID - [in] UUID in registry format from Windows guidgen.exe</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;  <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>( </div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sClassName,</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sBaseClassName,</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;          <a class="code" href="class_o_n___object.html">ON_Object</a>* (*create)(),</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sUUID</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;           );</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160; </div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;  <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>( </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sClassName,</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sBaseClassName,</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;          <a class="code" href="class_o_n___object.html">ON_Object</a>* (*create)(),</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;          <span class="keywordtype">bool</span> (*copy)(<span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>*,<a class="code" href="class_o_n___object.html">ON_Object</a>* ),</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sUUID</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;           );</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160; </div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  ~<a class="code" href="class_o_n___class_id.html">ON_ClassId</a>();</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160; </div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;  <span class="comment">// Description: </span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  <span class="comment">//   Gets a class&#39;s ON_ClassId from the class&#39;s name.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;  <span class="comment">// Parameters:</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;  <span class="comment">//   sClassName - [in] name of class</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;  <span class="comment">// Returns: </span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;  <span class="comment">//   Pointer to the class&#39;s ON_ClassId.</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;  <span class="comment">// Example:</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;  <span class="comment">//   const ON_ClassId* brep_id = ON_CLassId::ClassId(&quot;ON_Brep&quot;);</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* ClassId( </div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sClassName</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;          );</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160; </div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;  <span class="comment">// Description: </span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;  <span class="comment">//   Gets a class&#39;s ON_ClassId from the class&#39;s uuid.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  <span class="comment">// Parameters:</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <span class="comment">//   class_uuid - [in] uuid for the class</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;  <span class="comment">// Returns: </span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  <span class="comment">//   Pointer to the class&#39;s ON_ClassId.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  <span class="comment">// Example:</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  <span class="comment">//   ON_UUID brep_uuid = ON_UuidFromString(&quot;60B5DBC5-E660-11d3-BFE4-0010830122F0&quot;);</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  <span class="comment">//   const ON_ClassId* brep_id = ON_CLassId::ClassId(brep_uuid);</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* ClassId( </div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;          <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> class_uuid</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;          );</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;  <span class="comment">// Description:</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="comment">//   Each class derived from ON_Object has a corresponding ON_ClassId</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;  <span class="comment">//   stored in a linked list and the class is marked with an integer</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;  <span class="comment">//   value.  ON_ClassId::IncrementMark() increments the value used to</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  <span class="comment">//   mark new classes and returns the new marking value.</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  <span class="comment">//   Value that will be used to mark all future ON_ClassIds.</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">int</span> IncrementMark();</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">int</span> CurrentMark();</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* LastClassId();</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160; </div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;  <span class="comment">// Description:</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;  <span class="comment">//   Each class derived from ON_Object has a corresponding</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;  <span class="comment">//   ON_ClassId stored in a linked list.  If a class definition</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;  <span class="comment">//   is going to disappear (which happens when the derived object</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  <span class="comment">//   definition is in a DLL that uses openNURBS as a DLL and the </span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <span class="comment">//   DLL containing the derived object&#39;s definition is unloaded),</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;  <span class="comment">//   then the class&#39;s ON_ClassId needs to be removed from the class </span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;  <span class="comment">//   list.  ON_ClassId::Purge( mark ) removes all ON_ClassIds with a</span></div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;  <span class="comment">//   a prescribed mark and returns the number of classes that</span></div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;  <span class="comment">//   were purged.  </span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  <span class="comment">// Parameters:</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;  <span class="comment">//   mark - [in] All ON_ClassIds with this mark will be purged.</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  <span class="comment">//   Number of classes that were purged.</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;  <span class="comment">// Example:</span></div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;  <span class="comment">//   // Call ON_ClassId::IncrementMark() BEFORE loading MY.DLL.</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;  <span class="comment">//   int my_dll_classid_mark = ON_ClassId::IncrementMark();</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  <span class="comment">//   load MY.DLL with classes derived from ON_Object</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;  <span class="comment">//   ...</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;  <span class="comment">//   // Call ON_ClassId::Purge() BEFORE unloading MY.DLL.</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;  <span class="comment">//   ON_ClassId::Purge( my_dll_classid_mark );</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  <span class="comment">//   unload MY.DLL</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">int</span> Purge(<span class="keywordtype">int</span> mark);</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">bool</span> PurgeAfter(<span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* pClassId);</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160; </div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;  <span class="comment">// Description:</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;  <span class="comment">//   Dumps the ON_ClassId list</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;  <span class="comment">// Parameters:</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;  <span class="comment">//   dump - [in] destination for the text dump.</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">void</span> Dump( </div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; dump</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    );</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160; </div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;  <span class="comment">//   class name</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">char</span>* ClassName() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160; </div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;  <span class="comment">//   base class name</span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">char</span>* BaseClassName() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;  </div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;  <span class="comment">//   base class id</span></div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* BaseClass() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160; </div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="comment">// Description:</span></div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  <span class="comment">//   Determine if the class associated with this ON_ClassId</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  <span class="comment">//   is derived from another class.</span></div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;  <span class="comment">// Parameters:</span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  <span class="comment">//   potential_parent - [in] Class to test as parent.</span></div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;  <span class="comment">//   true if this is derived from potential_parent.</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    ON_BOOL32 IsDerivedFrom( </div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* potential_parent</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160; </div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;  <span class="comment">// Descrption:</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;  <span class="comment">//   Create an instance of the class associated with</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;  <span class="comment">//   class id.</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;  <span class="comment">//   Instance of the class id&#39;s class.</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;  <a class="code" href="class_o_n___object.html">ON_Object</a>* Create() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160; </div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;  <span class="comment">// Returns:</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;  <span class="comment">//   class uuid</span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;  <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> Uuid() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160; </div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;<span class="comment">    Opennurbs classes have a mark value of 0.  Core Rhino</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;<span class="comment">    classes have a mark value of 1.  Rhino plug-in classes</span></div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="comment">    have a mark value of &gt; 1.</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="comment">    Class mark value</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;  <span class="keywordtype">int</span> Mark() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160; </div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ClassIdVersion() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;  <span class="keyword">static</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* m_p0;     <span class="comment">// first id in the linked list of class ids</span></div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;  <span class="keyword">static</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* m_p1;     <span class="comment">// last id in the linked list of class ids</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;  <span class="keyword">static</span> <span class="keywordtype">int</span> m_mark0;  <span class="comment">// current mark value</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;  <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* m_pNext;         <span class="comment">// next in the linked list of class ids</span></div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* m_pBaseClassId;  <span class="comment">// base class id</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;  <span class="keywordtype">char</span> m_sClassName[80];              </div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;  <span class="keywordtype">char</span> m_sBaseClassName[80];</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;  <a class="code" href="class_o_n___object.html">ON_Object</a>* (*m_create)();</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;  <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> m_uuid;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;  <span class="keywordtype">int</span> m_mark; <span class="comment">// bit 0x80000000 is used to indicate new extensions</span></div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160; </div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;  <span class="comment">// no implementaion to prohibit use</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;  <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>();</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;  <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>( <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>&amp;);</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;  <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>&amp; operator=( <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>&amp;);</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160; </div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;  <span class="keywordtype">void</span> ConstructorHelper( </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sClassName, </div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sBaseClassName, </div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;          <span class="keyword">const</span> <span class="keywordtype">char</span>* sUUID</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;          );</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160; </div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;  <span class="comment">// This is a temporary way to add simple virtual functions</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;  <span class="comment">// to ON_Object without breaking the SDK.  At V6 these will</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;  <span class="comment">// be redone to be ordinary virtual functions.</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_o_n___object.html">ON_Object</a>;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_class_id_version; </div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;  bool (*m_copy)(<span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>*,<a class="code" href="class_o_n___object.html">ON_Object</a>*); <span class="comment">// on version 1 class ids</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;  <span class="keywordtype">void</span>* m_f2;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;  <span class="keywordtype">void</span>* m_f3;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="keywordtype">void</span>* m_f4;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;  <span class="keywordtype">void</span>* m_f5;</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;  <span class="keywordtype">void</span>* m_f6;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;  <span class="keywordtype">void</span>* m_f7;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;  <span class="keywordtype">void</span>* m_f8;</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;};</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160; </div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment">// Description:</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment">//   Macro to easily get a pointer to the ON_ClassId for a</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment">//   given class;</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="comment">// Example:</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="comment">//          const ON_ClassId* brep_class_id = ON_CLASS_ID(&quot;ON_Brep&quot;);</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="preprocessor">#define ON_CLASS_ID( cls ) ON_ClassId::ClassId( #cls )</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160; </div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;<span class="comment">  Expert user function to get the value of ON_ClassId::m_uuid</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">  of the last instance of ON_ClassId to call ON_ClassId::Create().</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;<span class="comment">  This function was created to support Rhino&#39;s .NET SDK.</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="comment">  This function returns the value of a static id in</span></div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="comment">  opennurbs_object.cpp and is NOT thread safe.</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="comment">Returns:</span></div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="comment">  Value of ON_ClassId::m_uuid of the instance of ON_ClassId that</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;<span class="comment">  most recently called ON_ClassId::Create().</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;ON_DECL</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> ON_GetMostRecentClassIdCreateUuid();</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160; </div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;<span class="comment">All classes derived from ON_Object must have </span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;<span class="comment">  ON_OBJECT_DECLARE( &lt;classname&gt; );</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="comment">as the first line in their class definition an a corresponding</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">  ON_VIRTUAL_OBJECT_IMPLEMENT( &lt;classname&gt;, &lt;basclassname&gt;, &lt;classuuid&gt; );</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;<span class="comment">or </span></div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="comment">  ON_OBJECT_IMPLEMENT( &lt;classname&gt;, &lt;basclassname&gt;, &lt;classuuid&gt; );</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="comment">in a .CPP file.</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="preprocessor">#define ON_OBJECT_DECLARE( cls )                                \</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="preprocessor">  protected:                                                    \</span></div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="preprocessor">    static void* m_s_##cls##_ptr;                               \</span></div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="preprocessor">  public:                                                       \</span></div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">    static const ON_ClassId m_##cls##_class_id;                 \</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="preprocessor">    </span><span class="comment">/*record used for ON_Object runtime type information*/</span><span class="preprocessor">      \</span></div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="preprocessor">                                                                \</span></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="preprocessor">    static cls * Cast( ON_Object* );                            \</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="preprocessor">    </span><span class="comment">/*Description: Similar to C++ dynamic_cast*/</span><span class="preprocessor">                \</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="preprocessor">    </span><span class="comment">/*Returns: object on success. NULL on failure*/</span><span class="preprocessor">             \</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="preprocessor">                                                                \</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="preprocessor">    static const cls * Cast( const ON_Object* );                \</span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="preprocessor">    </span><span class="comment">/*Description: Similar to C++ dynamic_cast*/</span><span class="preprocessor">                \</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="preprocessor">    </span><span class="comment">/*Returns: object on success. NULL on failure*/</span><span class="preprocessor">             \</span></div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="preprocessor">                                                                \</span></div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="preprocessor">    virtual const ON_ClassId* ClassId() const;                  \</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="preprocessor">    </span><span class="comment">/*Description:*/</span><span class="preprocessor">                                            \</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="preprocessor">                                                                \</span></div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="preprocessor">  private:                                                      \</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;<span class="preprocessor">    virtual ON_Object* DuplicateObject() const;                 \</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="preprocessor">    </span><span class="comment">/*used by Duplicate to create copy of an object.*/</span><span class="preprocessor">          \</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;<span class="preprocessor">                                                                \</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="preprocessor">    static bool Copy##cls( const ON_Object*, ON_Object* );      \</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;<span class="preprocessor">    </span><span class="comment">/* used by ON_Object::CopyFrom copy object into this. */</span><span class="preprocessor">    \</span></div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="preprocessor">    </span><span class="comment">/* In V6 Copy##cls will vanish and be replaced with   */</span><span class="preprocessor">    \</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;<span class="preprocessor">    </span><span class="comment">/* virtual bool CopyFrom( const ON_Object* src )      */</span><span class="preprocessor">    \</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;<span class="preprocessor">                                                                \</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="preprocessor">  public:                                                       \</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="preprocessor">    cls * Duplicate() const;                                    \</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="preprocessor">    </span><span class="comment">/*Description: Expert level tool - no support available.*/</span><span class="preprocessor">  \</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="preprocessor">    </span><span class="comment">/*If this class is derived from CRhinoObject, use CRhinoObject::DuplicateRhinoObject instead*/</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160; </div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;<span class="comment">// Objects derived from ON_Object that do not have a valid new, operator=, </span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;<span class="comment">// or copy constructor must use ON_VIRTUAL_OBJECT_IMPLEMENT instead of</span></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;<span class="comment">// ON_OBJECT_IMPLEMENT.  Objects defined with ON_VIRTUAL_OBJECT_IMPLEMENT</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;<span class="comment">// cannot be serialized using ON_BinaryArchive::ReadObject()/WriteObject()</span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="comment">// or duplicated using ON_Object::Duplicate().</span></div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="comment">// The Cast() and ClassId() members work on objects defined with either</span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;<span class="comment">// ON_VIRTUAL_OBJECT_IMPLEMENT or ON_OBJECT_IMPLEMENT.</span></div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="preprocessor">#define ON_VIRTUAL_OBJECT_IMPLEMENT( cls, basecls, uuid ) \</span></div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;<span class="preprocessor">  void* cls::m_s_##cls##_ptr = 0;\</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="preprocessor">  const ON_ClassId cls::m_##cls##_class_id(#cls,#basecls,0,0,uuid);\</span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="preprocessor">  cls * cls::Cast( ON_Object* p) {return(cls *)Cast((const ON_Object*)p);} \</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;<span class="preprocessor">  const cls * cls::Cast( const ON_Object* p) {return(p&amp;&amp;p-&gt;IsKindOf(&amp;cls::m_##cls##_class_id))?(const cls *)p:0;} \</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="preprocessor">  const ON_ClassId* cls::ClassId() const {return &amp;cls::m_##cls##_class_id;} \</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;<span class="preprocessor">  ON_Object* cls::DuplicateObject() const {return 0;} \</span></div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="preprocessor">  bool cls::Copy##cls( const ON_Object*, ON_Object* ) {return false;} \</span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;<span class="preprocessor">  cls * cls::Duplicate() const {return static_cast&lt;cls *&gt;(DuplicateObject());}</span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160; </div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;<span class="comment">// Objects derived from ON_Object that use ON_OBJECT_IMPLEMENT must</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="comment">// have a valid operator= and copy constructor.  Objects defined with</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;<span class="comment">// ON_OBJECT_IMPLEMENT may be serialized using </span></div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;<span class="comment">// ON_BinaryArchive::ReadObject()/WriteObject()</span></div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;<span class="comment">// and duplicated by calling ON_Object::Duplicate().</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;<span class="preprocessor">#define ON_OBJECT_IMPLEMENT( cls, basecls, uuid ) \</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;<span class="preprocessor">  void* cls::m_s_##cls##_ptr = 0;\</span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;<span class="preprocessor">  static ON_Object* CreateNew##cls() {return new cls();} \</span></div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;<span class="preprocessor">  const ON_ClassId cls::m_##cls##_class_id(#cls,#basecls,CreateNew##cls,cls::Copy##cls,uuid);\</span></div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;<span class="preprocessor">  cls * cls::Cast( ON_Object* p) {return(cls *)Cast((const ON_Object*)p);} \</span></div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;<span class="preprocessor">  const cls * cls::Cast( const ON_Object* p) {return(p&amp;&amp;p-&gt;IsKindOf(&amp;cls::m_##cls##_class_id))?(const cls *)p:0;} \</span></div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;<span class="preprocessor">  const ON_ClassId* cls::ClassId() const {return &amp;cls::m_##cls##_class_id;} \</span></div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;<span class="preprocessor">  ON_Object* cls::DuplicateObject() const {cls* p = new cls(); if (p) *p=*this; return p;} \</span></div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;<span class="preprocessor">  bool cls::Copy##cls( const ON_Object* src, ON_Object* dst ){cls* d;const cls* s;if (0!=(s=cls::Cast(src))&amp;&amp;0!=(d=cls::Cast(dst))) {d-&gt;cls::operator=(*s);return true;}return false;} \</span></div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;<span class="preprocessor">  cls * cls::Duplicate() const {return static_cast&lt;cls *&gt;(DuplicateObject());}</span></div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160; </div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;<span class="preprocessor">#define ON__SET__THIS__PTR(ptr) if (ptr) *((void**)this) = ptr</span></div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160; </div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;<span class="keyword">class </span><a class="code" href="class_o_n___user_data.html">ON_UserData</a>;</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160; </div>
<div class="line"><a name="l00336"></a><span class="lineno"><a class="line" href="class_o_n___user_string.html">  336</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___user_string.html">ON_UserString</a></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;{</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;  <a class="code" href="class_o_n___user_string.html">ON_UserString</a>();</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;  ~<a class="code" href="class_o_n___user_string.html">ON_UserString</a>();</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;  <a class="code" href="class_o_n__w_string.html">ON_wString</a> m_key;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;  <a class="code" href="class_o_n__w_string.html">ON_wString</a> m_string_value;</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160; </div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;  <span class="keywordtype">void</span> Dump(<a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; text_log) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;  <span class="keywordtype">bool</span> Write(<a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp;) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;  <span class="keywordtype">bool</span> Read(<a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp;);</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;};</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160; </div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;<span class="preprocessor">#if defined(ON_DLL_TEMPLATE)</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="comment">// This stuff is here because of a limitation in the way Microsoft</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="comment">// handles templates and DLLs.  See Microsoft&#39;s knowledge base </span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="comment">// article ID Q168958 for details.</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="preprocessor">#pragma warning( push )</span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="preprocessor">#pragma warning( disable : 4231 )</span></div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___class_array.html">ON_ClassArray&lt;ON_UserString&gt;</a>;</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="preprocessor">#pragma warning( pop )</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160; </div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="comment">  When ON_Object::IsValid() fails and returns false, ON_IsNotValid()</span></div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;<span class="comment">  is called.  This way, a developer can put a breakpoint in</span></div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;<span class="comment">  ON_IsNotValid() and stop execution at the exact place IsValid()</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;<span class="comment">  fails.</span></div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;<span class="comment">Returns:</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="comment">  false;</span></div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;ON_DECL</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="keywordtype">bool</span> ON_IsNotValid();</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160; </div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160; </div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="comment">// Description:</span></div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="comment">//   Pure virtual base class for all classes that must provide</span></div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;<span class="comment">//   runtime class id or support object level 3DM serialization</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"><a class="line" href="class_o_n___object.html">  376</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___object.html">ON_Object</a></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;{</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;  <span class="comment">// Any object derived from ON_Object should have a</span></div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;  <span class="comment">//   ON_OBJECT_DECLARE(ON_...);</span></div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;  <span class="comment">// as the last line of its class definition and a</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;  <span class="comment">//   ON_OBJECT_IMPLEMENT( ON_..., ON_baseclass );</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;  <span class="comment">// in a .cpp file.</span></div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  <span class="comment">// These macros declare and implement public members</span></div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;  <span class="comment">// static ON_ClassId m_ON_Object;</span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;  <span class="comment">// static cls * Cast( ON_Object* );</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;  <span class="comment">// static const cls * Cast( const ON_Object* );</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;  <span class="comment">// virtual const ON_ClassId* ClassId() const;</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;  ON_OBJECT_DECLARE(<a class="code" href="class_o_n___object.html">ON_Object</a>);</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160; </div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;<span class="comment">    Copies src into this, if possible.</span></div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;<span class="comment">    src - [in]</span></div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;<span class="comment">    True if this-&gt;operator= could be called to copy src.</span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;<span class="comment">    This should be virtual function declared in the</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;<span class="comment">    ON_OBJECT_DECLARE macro along the lines of DuplicateObject()</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;<span class="comment">    but is was added after the SDK was frozen (adding virtual</span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="comment">    functions breaks the SDK).  In V6, the function will work</span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="comment">    the same but be implemented like DuplicateObject();</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;  <span class="keywordtype">bool</span> CopyFrom( <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>* src );</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160; </div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160; </div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;  <a class="code" href="class_o_n___object.html">ON_Object</a>();</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;  <a class="code" href="class_o_n___object.html">ON_Object</a>( <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; );</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;  <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; operator=( <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; );</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;  <span class="keyword">virtual</span> ~<a class="code" href="class_o_n___object.html">ON_Object</a>();</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160; </div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;<span class="comment">    Sets m_user_data_list = 0.</span></div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;  <span class="keywordtype">void</span> EmergencyDestroy();</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160; </div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;<span class="comment">    The MemoryRelocate() function is called when an </span></div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;<span class="comment">    object&#39;s location in memory is changed.  For </span></div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;<span class="comment">    example, if an object resides in a chunk of </span></div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;<span class="comment">    memory that is grown by calling a realloc</span></div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;<span class="comment">    that has to allocate a new chunk and</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;<span class="comment">    copy the contents of the old chunk to the</span></div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;<span class="comment">    new chunk, then the location of the object&#39;s</span></div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="comment">    memory changes.  In practice this happens when</span></div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;<span class="comment">    classes derived from ON_Object are stored</span></div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;<span class="comment">    in dynamic arrays, like the default implementation</span></div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;<span class="comment">    of ON_ObjectArray&lt;&gt;&#39;s that use realloc to grow</span></div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;<span class="comment">    the dynamic array.</span></div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;  <span class="keyword">virtual</span> </div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;  <span class="keywordtype">void</span> MemoryRelocate();</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160; </div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;<span class="comment">    Low level tool to test if an object is derived</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;<span class="comment">    from a specified class.</span></div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;<span class="comment">    pClassId - [in] use classname::ClassId()</span></div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;<span class="comment">    true if the instantiated object is derived from the</span></div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;<span class="comment">    class whose id is passed as the argument.</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;<span class="comment">  Example:</span></div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;<span class="comment">          ON_Object* p = ....;</span></div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;<span class="comment">          if ( p-&gt;IsKindOf( ON_NurbsCurve::ClassId() ) )</span></div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;<span class="comment">          {</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;<span class="comment">            it&#39;s a NURBS curve</span></div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;<span class="comment">          }</span></div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;<span class="comment">    The primary reason for IsKindOf() is to support the</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;<span class="comment">    static Cast() members declared in the ON_OBJECT_DECLARE</span></div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;<span class="comment">    macro.  If we determine that dynamic_cast is properly </span></div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;<span class="comment">    supported and implemented by all supported compilers, </span></div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;<span class="comment">    then IsKindOf() may dissappear.  If an application needs</span></div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;<span class="comment">    to determine if a pointer points to a class derived from</span></div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;<span class="comment">    ON_SomeClassName, then call </span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="comment">    ON_SomeClassName::Cast(mystery pointer) and check for </span></div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="comment">    a non-null return.</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;  ON_BOOL32 IsKindOf( </div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n___class_id.html">ON_ClassId</a>* pClassId</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160; </div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;<span class="comment">    Tests an object to see if its data members are correctly</span></div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;<span class="comment">    initialized.</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;<span class="comment">    text_log - [in] if the object is not valid and text_log</span></div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;<span class="comment">        is not NULL, then a brief englis description of the</span></div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;<span class="comment">        reason the object is not valid is appened to the log.</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="comment">        The information appended to text_log is suitable for </span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="comment">        low-level debugging purposes by programmers and is </span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;<span class="comment">        not intended to be useful as a high level user </span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="comment">        interface tool.</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;<span class="comment">    @untitled table</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;<span class="comment">    true     object is valid</span></div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;<span class="comment">    false    object is invalid, uninitialized, etc.</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span> = 0;</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160; </div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;<span class="comment">    Creates a text dump of the object.</span></div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="comment">    Dump() is intended for debugging and is not suitable</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;<span class="comment">    for creating high quality text descriptions of an</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;<span class="comment">    object.</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="comment">    The default implementations of this virtual function </span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="comment">    prints the class&#39;s name.</span></div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160; </div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;<span class="comment">    An estimate of the amount of memory the class uses in bytes.</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160; </div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;<span class="comment">    Returns a CRC calculated from the information that defines</span></div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;<span class="comment">    the object.  This CRC can be used as a quick way to see</span></div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;<span class="comment">    if two objects are not identical.</span></div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;<span class="comment">    current_remainder - [in];</span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;<span class="comment">    CRC of the information the defines the object.</span></div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;  ON__UINT32 DataCRC(ON__UINT32 current_remainder) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160; </div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;<span class="comment">    Low level archive writing tool used by ON_BinaryArchive::WriteObject().</span></div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;<span class="comment">    binary_archive - archive to write to</span></div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;<span class="comment">    Returns true if the write is successful.</span></div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="comment">    Use ON_BinaryArchive::WriteObject() to write objects.</span></div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;<span class="comment">    This Write() function should just write the specific definition of</span></div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;<span class="comment">    this object.  It should not write and any chunk typecode or length</span></div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;<span class="comment">    information.  </span></div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;<span class="comment">    The default implementation of this virtual function returns </span></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;<span class="comment">    false and does nothing.</span></div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;  ON_BOOL32 Write(</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;         <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; binary_archive</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;       ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160; </div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;<span class="comment">    Low level archive writing tool used by ON_BinaryArchive::ReadObject().</span></div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;<span class="comment">    binary_archive - archive to read from</span></div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;<span class="comment">    Returns true if the read is successful.</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;<span class="comment">    Use ON_BinaryArchive::ReadObject() to read objects.</span></div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;<span class="comment">    This Read() function should read the objects definition back into</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;<span class="comment">    its data members.</span></div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;<span class="comment">    The default implementation of this virtual function returns </span></div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;<span class="comment">    false and does nothing.</span></div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;  ON_BOOL32 Read(</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;         <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; binary_archive</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;       );</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160; </div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;<span class="comment">    Useful for switch statements that need to differentiate</span></div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;<span class="comment">    between basic object types like points, curves, surfaces,</span></div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;<span class="comment">    and so on.</span></div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;<span class="comment">  Returns: </span></div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;<span class="comment">    ON::object_type enum value.</span></div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;<span class="comment">    @untitled table</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;<span class="comment">    ON::unknown_object_type      unknown object</span></div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;<span class="comment">    ON::point_object             derived from ON_Point</span></div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;<span class="comment">    ON::pointset_object          some type of ON_PointCloud, ON_PointGrid, ...</span></div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;<span class="comment">    ON::curve_object             derived from ON_Curve</span></div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;<span class="comment">    ON::surface_object           derived from ON_Surface</span></div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;<span class="comment">    ON::brep_object              derived from ON_Brep</span></div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;<span class="comment">    ON::extrusion_object         derived from ON_Extrusion</span></div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;<span class="comment">    ON::mesh_object              derived from ON_Mesh</span></div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;<span class="comment">    ON::layer_object             derived from ON_Layer</span></div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;<span class="comment">    ON::material_object          derived from ON_Material</span></div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;<span class="comment">    ON::light_object             derived from ON_Light</span></div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;<span class="comment">    ON::annotation_object        derived from ON_Annotation,</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;<span class="comment">    ON::userdata_object          derived from ON_UserData</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;<span class="comment">    ON::text_dot                 derived from ON_TextDot</span></div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;<span class="comment">    The default implementation of this virtual function returns</span></div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;<span class="comment">    ON::unknown_object_type</span></div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;  ON::object_type ObjectType() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160; </div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160; </div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160; </div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;<span class="comment">    All objects in an opennurbs model have an id</span></div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;<span class="comment">    ( ON_Layer.m_layer_id, ON_Font.m_font_id, </span></div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;<span class="comment">      ON_Material.m_material_id, ON_3dmObjectAttributes.m_uuid</span></div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;<span class="comment">      ).</span></div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;<span class="comment">    The id used to identify the object in the openurbs model.</span></div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;  <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a> ModelObjectId() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160; </div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;  <span class="comment">// BEGIN: User string support</span></div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160; </div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;<span class="comment">    Attach a user string to the object.  This information will</span></div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;<span class="comment">    perisist through copy construction, operator=, and file IO.</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;<span class="comment">    key - [in] id used to retrieve this string.</span></div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;<span class="comment">    string_value - [in] </span></div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;<span class="comment">      If NULL, the string with this id will be removed.</span></div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;<span class="comment">    True if successful.</span></div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;  <span class="keywordtype">bool</span> SetUserString( </div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* key, </div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* string_value </div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;    );</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160; </div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;<span class="comment">    Append entries to the user string list</span></div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;<span class="comment">    count - [in]</span></div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;<span class="comment">      number of element in us[] array</span></div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;<span class="comment">    user_strings - [in]</span></div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;<span class="comment">      entries to append.</span></div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;<span class="comment">    bReplace - [in]</span></div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;<span class="comment">      If bReplace is true, then existing entries with the same key are</span></div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;<span class="comment">      updated with the new entry&#39;s value.  If bReplace is false, then</span></div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;<span class="comment">      existing entries are not updated.</span></div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;<span class="comment">    Number of entries added, deleted, or modified.</span></div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;  <span class="keywordtype">int</span> SetUserStrings( <span class="keywordtype">int</span> count, <span class="keyword">const</span> <a class="code" href="class_o_n___user_string.html">ON_UserString</a>* user_strings, <span class="keywordtype">bool</span> bReplace );</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160; </div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;<span class="comment">    Get user string from the object.</span></div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;<span class="comment">    key - [in] id used to retrieve the string.</span></div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;<span class="comment">    string_value - [out]</span></div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;<span class="comment">    True if a string with id was found.</span></div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;  <span class="keywordtype">bool</span> GetUserString( </div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">wchar_t</span>* key, </div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;    <a class="code" href="class_o_n__w_string.html">ON_wString</a>&amp; string_value </div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160; </div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;<span class="comment">    Get a list of all user strings on the object.</span></div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;<span class="comment">    user_strings - [out]</span></div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;<span class="comment">      user strings are appended to this list.</span></div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;<span class="comment">    Number of elements appended to the user_strings list.</span></div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;  <span class="keywordtype">int</span> GetUserStrings( </div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;    <a class="code" href="class_o_n___class_array.html">ON_ClassArray&lt;ON_UserString&gt;</a>&amp; user_strings </div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160; </div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;<span class="comment">    Get a list of all user string keys on the object.</span></div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;<span class="comment">    user_string_keys - [out]</span></div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;<span class="comment">      user string keys are appended to this list.</span></div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;<span class="comment">    Number of elements appended to the user_strings list.</span></div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;  <span class="keywordtype">int</span> GetUserStringKeys( </div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;    <a class="code" href="class_o_n___class_array.html">ON_ClassArray&lt;ON_wString&gt;</a>&amp; user_string_keys </div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160; </div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;<span class="comment">    Number of user strings on the object.</span></div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;  <span class="keywordtype">int</span> UserStringCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160; </div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;  <span class="comment">// END: User string support</span></div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;  <span class="comment">// User data provides a standard way for extra information to</span></div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;  <span class="comment">// be attached to any class derived from ON_Object.  The attached</span></div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;  <span class="comment">// information can persist and be transformed.  If you use user</span></div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;  <span class="comment">// data, please carefully read all the comments from here to the</span></div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;  <span class="comment">// end of the file.</span></div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160; </div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;<span class="comment">    Attach user data to an object.</span></div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;<span class="comment">    pUserData - [in] user data to attach to object.</span></div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;<span class="comment">        The ON_UserData pointer passed to AttachUserData()</span></div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;<span class="comment">        must be created with new.  </span></div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;<span class="comment">    If true is returned, then ON_Object will delete the user</span></div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;<span class="comment">    data when appropriate.  If false is returned, then data </span></div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;<span class="comment">    could not be attached and caller must delete.  </span></div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;<span class="comment">    AttachUserData() will fail if the user data&#39;s m_userdata_uuid</span></div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;<span class="comment">    field is nil or not unique.</span></div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;  ON_BOOL32 AttachUserData( </div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;          <a class="code" href="class_o_n___user_data.html">ON_UserData</a>* pUserData </div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;          );</div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160; </div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;<span class="comment">    Remove user data from an object.</span></div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;<span class="comment">    pUserData - [in] user data to attach to object.</span></div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;<span class="comment">        The ON_UserData pointer passed to DetachUserData()</span></div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;<span class="comment">        must have been previously attached using </span></div>
<div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;<span class="comment">        AttachUserData().  </span></div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;<span class="comment">    If true is returned, then the user data was</span></div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;<span class="comment">    attached to this object and it was detached.  If false</span></div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;<span class="comment">    is returned, then the user data was not attached to this</span></div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;<span class="comment">    object to begin with.  In all cases, you can be assured</span></div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;<span class="comment">    that the user data is no longer attached to &quot;this&quot;.</span></div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;<span class="comment">    Call delete pUserData if you want to destroy the user data.</span></div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;  ON_BOOL32 DetachUserData(</div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;          <a class="code" href="class_o_n___user_data.html">ON_UserData</a>* pUserData </div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;          );</div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160; </div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160; </div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;<span class="comment">    Get a pointer to user data.</span></div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;<span class="comment">    userdata_uuid - [in] value of the user data&#39;s </span></div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;<span class="comment">       m_userdata_uuid field.</span></div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;<span class="comment">    The returned user data is still attached to the object.</span></div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;<span class="comment">    Deleting the returned user data will automatically remove</span></div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;<span class="comment">    the user data from the object.</span></div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;  <a class="code" href="class_o_n___user_data.html">ON_UserData</a>* GetUserData( </div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a>&amp; userdata_uuid</div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;          ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160; </div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;<span class="comment">    PurgeUserData() removes all user data from object.  </span></div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;<span class="comment">    Use delete GetUserData(...) to destroy a single piece</span></div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;<span class="comment">    of user data.</span></div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;  <span class="keywordtype">void</span> PurgeUserData();</div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160; </div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;<span class="comment">    User data is stored as a linked list of ON_UserData</span></div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;<span class="comment">    classes.  FirstUserData gets the first item in the</span></div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;<span class="comment">    linked list.  This is the most recent item attached</span></div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;<span class="comment">    using AttachUserData().</span></div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;<span class="comment">  Remark:</span></div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;<span class="comment">    To iterate through all the user data on an object, </span></div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;<span class="comment">    call FirstUserData() and then use ON_UserData::Next()</span></div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;<span class="comment">    to traverse the list.</span></div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;  <a class="code" href="class_o_n___user_data.html">ON_UserData</a>* FirstUserData() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160; </div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;<span class="comment">    Objects derived from ON_Geometry must call</span></div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;<span class="comment">    TransformUserData() in their Transform() member function.</span></div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;<span class="comment">    xform - [in] transformation to apply to user data</span></div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;  <span class="keywordtype">void</span> TransformUserData( </div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;    );</div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160; </div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;<span class="comment">    Expert user tool that copies user data that has a positive </span></div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;<span class="comment">    m_userdata_copycount from the source_object to this.</span></div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;<span class="comment">    source_object - [in] source of user data to copy</span></div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;<span class="comment">    Generally speaking you don&#39;t need to use CopyUserData().</span></div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;<span class="comment">    Simply rely on ON_Object::operator=() or the copy constructor</span></div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;<span class="comment">    to do the right thing.</span></div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;  <span class="keywordtype">void</span> CopyUserData( </div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; source_object </div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;    );</div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160; </div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;<span class="comment">    Expert user tool Moves user data from source_object </span></div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;<span class="comment">    to this, including user data with a nil m_userdata_copycount.</span></div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;<span class="comment">    Deletes any source user data with a duplicate m_userdata_uuid</span></div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;<span class="comment">    on this.</span></div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;  <span class="keywordtype">void</span> MoveUserData( </div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;    <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; source_object </div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;    );</div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160; </div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160; </div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;  <span class="comment">// Expert interface</span></div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160; </div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;<span class="comment">    Expert user function.  If you are using openNURBS in its</span></div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;<span class="comment">    default configuration to read and write 3dm archives,</span></div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;<span class="comment">    you never need to call this function.</span></div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;<span class="comment">    Many objects employ lazy creation of (runtime) caches</span></div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;<span class="comment">    that save information to help speed geometric calculations.</span></div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;<span class="comment">    This function will destroy all runtime information.</span></div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;<span class="comment">    bDelete - [in] if true, any cached information is properly</span></div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;<span class="comment">                   deleted.  If false, any cached information</span></div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;<span class="comment">                   is simply discarded.  This is useful when</span></div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;<span class="comment">                   the cached information may be in alternate</span></div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;<span class="comment">                   memory pools that are managed in nonstandard</span></div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;<span class="comment">                   ways.</span></div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;  <span class="keyword">virtual</span></div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;  <span class="keywordtype">void</span> DestroyRuntimeCache( <span class="keywordtype">bool</span> bDelete = <span class="keyword">true</span> );</div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160; </div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;  <span class="keyword">friend</span> <span class="keywordtype">int</span> ON_BinaryArchive::ReadObject( <a class="code" href="class_o_n___object.html">ON_Object</a>** );</div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;  <span class="keyword">friend</span> <span class="keywordtype">bool</span> ON_BinaryArchive::WriteObject( <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; );</div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;  <span class="keyword">friend</span> <span class="keywordtype">bool</span> ON_BinaryArchive::ReadObjectUserData( <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; );</div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;  <span class="keyword">friend</span> <span class="keywordtype">bool</span> ON_BinaryArchive::WriteObjectUserData( <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>&amp; );</div>
<div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_o_n___user_data.html">ON_UserData</a>;</div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;  <a class="code" href="class_o_n___user_data.html">ON_UserData</a>* m_userdata_list;</div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;};</div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160; </div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160; </div>
<div class="ttc" id="aclass_o_n___binary_archive_html"><div class="ttname"><a href="class_o_n___binary_archive.html">ON_BinaryArchive</a></div><div class="ttdef"><b>Definition:</b> opennurbs_archive.h:732</div></div>
<div class="ttc" id="aclass_o_n___class_array_html"><div class="ttname"><a href="class_o_n___class_array.html">ON_ClassArray&lt; ON_UserString &gt;</a></div></div>
<div class="ttc" id="aclass_o_n___class_id_html"><div class="ttname"><a href="class_o_n___class_id.html">ON_ClassId</a></div><div class="ttdef"><b>Definition:</b> opennurbs_object.h:43</div></div>
<div class="ttc" id="aclass_o_n___object_html"><div class="ttname"><a href="class_o_n___object.html">ON_Object</a></div><div class="ttdef"><b>Definition:</b> opennurbs_object.h:377</div></div>
<div class="ttc" id="aclass_o_n___text_log_html"><div class="ttname"><a href="class_o_n___text_log.html">ON_TextLog</a></div><div class="ttdef"><b>Definition:</b> opennurbs_textlog.h:23</div></div>
<div class="ttc" id="aclass_o_n___u_u_i_d_html"><div class="ttname"><a href="class_o_n___u_u_i_d.html">ON_UUID</a></div><div class="ttdef"><b>Definition:</b> opennurbs_uuid.h:32</div></div>
<div class="ttc" id="aclass_o_n___user_data_html"><div class="ttname"><a href="class_o_n___user_data.html">ON_UserData</a></div><div class="ttdef"><b>Definition:</b> opennurbs_userdata.h:21</div></div>
<div class="ttc" id="aclass_o_n___user_string_html"><div class="ttname"><a href="class_o_n___user_string.html">ON_UserString</a></div><div class="ttdef"><b>Definition:</b> opennurbs_object.h:337</div></div>
<div class="ttc" id="aclass_o_n___xform_html"><div class="ttname"><a href="class_o_n___xform.html">ON_Xform</a></div><div class="ttdef"><b>Definition:</b> opennurbs_xform.h:29</div></div>
<div class="ttc" id="aclass_o_n__w_string_html"><div class="ttname"><a href="class_o_n__w_string.html">ON_wString</a></div><div class="ttdef"><b>Definition:</b> opennurbs_string.h:701</div></div>
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